51. The total value of nickels and dimes in a coin bank is $3. If the nickels

were dimes and the dimes were nickels, the total value of the coins

would be $3.75. find the number of nickels and the number of dimes in

the bank.

52. Solve. (Show your work step by step.)

53. Jackson has a total of $6000 invested in two simple interest accounts.

The annual simple interest rates are 9% and 6%. How much is invested

in each account if the total interest earned is $432.

Use two variables and two equations.

x = the amount invested @9% account

y = the amount invested @ 6% account

Account

Principal($)

Interest rate(%)

Interest($)

@9%

x

.09

@6%

y

.06

Total

$6000

$432

Set up the equations and solve the problem.

Use the total principal $6,000 to set up the first equation.

Use the total interest earned $432 to set up the second equation.

54. Simplify

55. Simplify

56. Simplify

Use long division method. (Must show your work.Circle your anwer.)

57. Divide.

58. Divide.